CVE-2026-13046
Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already obtained the ability to write files on the appliance to execute arbitrary code in the context of the samld service by causing samld to load a maliciously crafted session file.
| CWE | CWE-502 |
| Vendor | watchguard |
| Product | fireware os |
| Published | Sep 29, 2026 |
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Affected Versions
WatchGuard / Fireware OS
2026.3 < 2026.3.2 2025.0 < 2026.2.3 12.0 < 12.12.3
WatchGuard / Fireware OS
12.11 < 12.11.10
References
Credits
Nicholas Zubrisky (@NZubrisky) of TrendAI Research